Seiko Cal. 6633 - 987

Released in 1975, the Cal. 6633 with design code 987 was part of Seiko's domestic market collection. With its 20mm lug width and 14.9mm profile, it sits comfortably on most wrists. [seikata-wm-4abb915ca7cd]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1975

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